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While drama still enfolds Carl Icahn's participation in the bidding for Dell Inc., the investor has sparked intrigue in shares of Nuance Communications Inc. by purchasing a substantial position in the voice recognition technology company.

Ken deRegt will retire as head of fixed income at Morgan Stanley and be replaced by Michael Heaney and Robert Rooney. For other updates launch today's Movers & shakers slideshow.
Apax Partners offers $1.1 billion for Rue21, the same teenage fashion chain it took public in 2009. More video